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Atoms
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Rydberg Atomic Physics
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Rydberg Atomic Physics

A special issue of Atoms (ISSN 2218-2004).

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 2950

Special Issue Editor

Dr. Spiros Alexiou

E-Mail Website
Guest Editor
Hellenic Army Academy, Varis-Koropiou Avenue, 16673 Vari, Greece
Interests: line broadening, plasmas; stark effect; atomic physics; collisions; line shapes; random processes; memory loss mechanisms
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Because of their high polarizability and responsiveness to relatively small perturbation, Rydberg states are attractive for a number of applications, such as building quantum logic gates, electromagnetically induced transparency and control, quantum information processing, quantum nonlinear media, and diagnostics. The objective of this Special Issue of Atoms, entitled “Rydberg Atomic Physics”, is to present the main ideas and applications from different fields of work, all dealing with or making use of Rydberg states. It is also hoped that this Special Issue will stimulate the exchange and cross-fertilization of ideas, applications, techniques and methods across different disciplines and result in increased interactions between different communities working with Rydberg states.

Dr. Spiros Alexiou
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atoms is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Rydberg states
  • quantum information processing
  • quantum computing
  • electromagnetically induced transparency
  • photon–photon interactions

Published Papers (2 papers)

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Research

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28 pages, 8131 KiB  
Article
Effects of Spiralling Trajectories on White Dwarf Spectra: High Rydberg States
by Spiros Alexiou
Atoms 2023, 11(11), 141; https://doi.org/10.3390/atoms11110141 - 01 Nov 2023
Viewed by 1065
Abstract
It has been recently suggested that white dwarf diagnostics could be in error and should be revised because of the effect of the magnetic field on spiralling trajectories of the plasma particles (mainly electrons), predicting a dramatic width increase for high densities of [...] Read more.
It has been recently suggested that white dwarf diagnostics could be in error and should be revised because of the effect of the magnetic field on spiralling trajectories of the plasma particles (mainly electrons), predicting a dramatic width increase for high densities of Balmer-β and especially for the δ and ϵ lines. These suggestions overlook important physics and are shown here to be incorrect. Specifically, exact calculations are carried out that can assess the importance of various physical effects neglected in the erroneous analysis mentioned. The net result of accounting for spiralling electron trajectories is typically a small to modest reduction in the line widths, at least for the parameters considered. Full article
(This article belongs to the Special Issue Rydberg Atomic Physics)
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Review

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19 pages, 995 KiB  
Review
Review of Rydberg Spectral Line Formation in Plasmas
by Andrey Yu. Letunov and Valery S. Lisitsa
Atoms 2023, 11(10), 133; https://doi.org/10.3390/atoms11100133 - 17 Oct 2023
Viewed by 1287
Abstract
The present review is dedicated to the problem of an array of transitions between highly-excited atomic levels. Hydrogen atoms and hydrogen-like ions in plasmas are considered here. The presented methods focus on calculation of spectral line shapes. Fast and simple methods of universal [...] Read more.
The present review is dedicated to the problem of an array of transitions between highly-excited atomic levels. Hydrogen atoms and hydrogen-like ions in plasmas are considered here. The presented methods focus on calculation of spectral line shapes. Fast and simple methods of universal ionic profile calculation for the Hnα (Δn=1) and Hnβ (Δn=2) spectral lines are demonstrated. The universal dipole matrix elements formulas for the Hnα and Hnβ transitions are presented. A fast method for spectral line shape calculations in the presence of an external magnetic field using the formulas for universal dipole matrix elements is proposed. This approach accounts for the Doppler and Stark–Zeeman broadening mechanisms. Ion dynamics effects are treated via the frequency fluctuation model. The accuracy of the presented model is discussed. A comparison of this approach with experimental data and the results of molecular dynamics simulation is demonstrated. The kinetics equation for the populations of highly-excited ionic states is solved in the parabolic representation. The population source associated with dielectronic recombination is considered. Full article
(This article belongs to the Special Issue Rydberg Atomic Physics)
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